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Request Tracker, migrating from RT 3.8.0 to RT 4.0.2

We’ve been using Request Tracker for tracking requests, incidents and resolutions for years now. A few days ago, we decided to migrate our RT server to a virtual machine so we can retire the old machine. We decided to upgrade to RT 4.0.2 as well.

The upgrade process became complicated because we decided to keep our old data. We managed to upgrade successfully but not without roadblocks.

These are the 2 major issues that we encountered:

1. RT 4.0.2 won’t start because of an issue with the Attachments table, wrong type: